Fix link anchor issue

fix 'Save public key for identity file configuration' markdown link
fix 'Remote Machines (agent forwarding)' markdown link

README.md

@@ -45,11 +45,11 @@ If you have a comment or suggestion, please open an [issue](https://github.com/d
   * [Create configuration](#create-configuration)
   * [Replace agents](#replace-agents)
   * [Copy public key](#copy-public-key)
-  * [(Optional) Save public key for identity file configuration](#-optional--save-public-key-for-identity-file-configuration)
+  * [(Optional) Save public key for identity file configuration](#optional-save-public-key-for-identity-file-configuration)
   * [Connect with public key authentication](#connect-with-public-key-authentication)
   * [Touch to authenticate](#touch-to-authenticate)
   * [Import SSH keys](#import-ssh-keys)
-  * [Remote Machines (agent forwarding)](#remote-machines--agent-forwarding-)
+  * [Remote Machines (agent forwarding)](#remote-machines-agent-forwarding)
   * [GitHub](#github)
   * [OpenBSD](#openbsd-1)
   * [Windows](#windows)